In this paper, we present a new modified interval symmetric single-step procedure
ISS2-5D which is the extension from the previous procedure ISS2. The algorithm
of ISS2-5D includes the introduction of reusable correctors (k ) (i 1,...,n)
i δ = for
k ≥ 0 . The procedure is tested on five test polynomials and the results are
obtained using MATLAB 2007 software in association with IntLab V5.5 toolbox
to record the CPU times and the number of iterations.